A bleaching herbicidal activity of methoxyhygromycin (MHM) produced by an actinomycete strain Streptomyces sp. 8E-12

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Title
A bleaching herbicidal activity of methoxyhygromycin (MHM) produced by an actinomycete strain Streptomyces sp. 8E-12
Author(s)
Hyang Burm Lee; Chang Jin Kim; J S Kim; K S Hong; K Y Cho
Bibliographic Citation
Letters in Applied Microbiology, vol. 36, no. 6, pp. 387-391
Publication Year
2003
Abstract
Aims: To screen bioherbicidal isolates and evaluate herbicidal activity of methoxyhygromycin (MHM) produced by Streptomyces sp. 8E-12. Methods and Results: Streptomyces sp. 8E-12 with herbicidal activity was selected through seed germination bioassay. An active metabolite, MHM was isolated from culture broth by carbon absorption, butanol extraction, silica gel, Sephadex LH-20 and G-10 chromatography, and preparative HPLC. The metabolite was identified by electrospray ionization mass spectra (ESI-MS) and 1H- and 13C-NMR spectral data analyses. In vivo herbicidal activity was examined against weeds and crops grown on pots. Conclusions: Streptomyces sp. 8E-12 produced a selective herbicidal metabolite which was identified as MHM. The metabolite showed stronger in vivo activity against monocotyledonous plants than dicotyledonous plants, and caused a bleaching (albino symptom) on some weeds including Digitaria sanguinalis and Echinochloa crus-galli. Significance and Impact of the Study: These results showed that Streptomyces sp. 8E-12 produced a bioherbicidal metabolite, MHM and can be developed as a biocontrol agent (BCA) for weed control.
Keyword
Biocontrol agentBioherbicidal activityMethoxyhygromycinStreptomyces sp. 8E-12
ISSN
0266-8254
Publisher
Wiley
DOI
http://dx.doi.org/10.1046/j.1472-765X.2003.01327.x
Type
Article
Appears in Collections:
Division of Biomaterials Research > Industrial Bio-materials Research Center > 1. Journal Articles
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